Stoker-feed mechanism.



O. D. YOUNG.

STOKER FEED MECHANISM.

APPLICATION FILED NOV. 7, 1910 Patented Aug. 15, 1911.

2 SHEETSSHEET 1.

WITNESS/E/S A MM I fix C. D. YOUNG.

STOKBR FEED MECHANISM.

APPLICATION FILED NOV. 7, 1910.

1 ,OOO,658, Patented Aug. 15, 1911.

2 SHEETS-SHEET 2.

WITNESSES INVENTOR PATENT OFFICE.

CHARLES n. YOUNG, or rrrrsnon rnnnsrtvlsnm.

STOKEIt-FEED MECHANISM.

Specification of Letters Patent.

Patented Au 15, 1911,.

Application filed November 7,1910. Serial No. 591,148.

To all whom it may concern: I

Be it known that I, CHARLES D. YOUNG, a citizen of the United 'States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Stoker- Feed Mechanism, of which the following is a specification. l

The invention relates to .feedmechanism for use with, an automatic :stokerffiof -the underfeed type and is illustratedasapplied to a locomotive, but it will beunderstood that certain features of the'inventi'on are .capable of general application. The invention has for its primary objects ;thei:pro

vision of a simplified mechanism forcarrying the coal from the tender to the feed pistons and one whereinno joints or connections are required in the transfer chute; the provision of an arrangement wherein the crushing of the coal and its transfer to the locomotive is divided into two'stages and the effectiveness of the feed increased; and the provision of an improved and simplified link connection for driving the auxiliary feeding pistons in unison with the main feed pistons. Certain embodiments of the in- A vent-ion are illustrated in the accompanying drawings, wherein Figure 1 is a longitudinal section through a locomotive tender provided with my im proved construction.

Figure 2 is a diagrammatic plan view of the operating link mechanism employed, with the location of certain other coeperating parts indicated in dotted lines, and

Figure 3 is a longitudinal section through a locomotive tender provided with a modified form of construction. I

Referring to Figs. 1 and 2 of the drawings, the principal parts of the construction may be enumerated briefly as follows. 1 is the rear end of the locomotive fire-box provided with a pair of under-feed troughs 2-2 and grate 3; 44 are a pair of auxiliary feed pistons operating in the underfeed troughs; 5-5 are the main feed pistons operating at the rear of the troughs 22 in feed chambers 66; 7 is a rock shaft operated from the steam cylinder 8, which rock shaft carries the crank arm 9 secured at its upper end to the two connecting rods 10-10 (Fig. 2) 11 is a cross bar to which the rear ends of the connecting. rods 1010 are secured, which cross bar is the operating member for the main feed pistons 5--5;

12 is the floor of the tender provided with "rods 16 16 pivoted to the opposite sides of, the piston 14 at 17; 18 is the chute into which the piston 14 discharges, which chute -discharges. at its front end to the-pistons- 5j '5; .19 are reciprocatory bars mounted in theupper portionof the chute l8 and provided with the feed flaps 20; 21'is the preliminary feeding piston carried by the bars 19; 22 is a door for controlling theflow of fuelv to the outlet passage 13; and 23 is the operating lever for controlling the position of .the door 22.

The bars 19 are provided with a cross member 24 carrying at its oppositeends the links 25, which links are connected at their front ends to the links26-26 lying on opposite sides of the feed chute. These links 26 are operated from the connecting rods 16'16 by means of the connecting rods 2727. The operating lever or handle 23 is carried by the rock shaft 28, which rock shaft is connected to the door 22 by means of the link members 29 and 30 as indicated in Fig. 1. 1

i The operation is as follows. Coal is fed by gravity through the passage 13 to the front of the piston 14. The forward move-- A modified construction is shown in Fig.

3. In the arrangement here shown the crushing piston 14 works rearwardly instead of forwardly, and the coal is discharged into a hopper 31 thence to the front of the piston 21' working the chute 18. The piston 21 is carried by bars 19 which also carry the flaps 20', the operating connection bein substantially the same as those hereto ore described in connection with Figs. 1 and 2. The piston 14 is provided wlth agitating means 15 correspond ing to the means employed in the other form of apparatus, and the door 22' is operated in the same manner as the corresponding door of the construction of Figs. 1 and 2. V

I 'The use of the additional plunger 14, instead of feeding directly in front of the piston 21 by gravity as has heretofore been done, is advantageous as the amount of fuel supplied to the chute 18 can be limited to the amount supplied by the piston 14,, and all danger of clogging in the chute due to the overfeed at the rear end avoided. The result could obviously not be attained by'a direct gravity feed from the tender to the chute in front ofthe piston 21. Other advantages incident to the construction will be apparent to those skilled in the art.

Having thus described my invention and illustrated its use, what I claim asnew and desire to secure by Letters Patent is the .following:

1. In combination in apparatus for supplying coal to a locomotive fire-box, a tender provided with a gravity discharge passage, a crushing piston working transversely of the passage, achute below the piston in position to re ive the discharge from the passage and extending forwardly to a point adjacent the fire-box of the locomotive, a piston Working in the chute at the rear end thereof, and reciprocatory means the locomotive, a

for-forwarding the of the chute.

2. In combination in apparatus for supplying coal to a locomotive fire-box, a tender provided with a gravity discharge passage having a transverse portion, a crushing piston working in the transverse portion, a chute in position to receive the discharge from the passa e and extending forwardly to a point ad acent the fire-box of coal to the front end giving the coal received its preliminary forward movement, and reciprocator'y means .in the chute for forwarding the coal therethrough.

piston in the chute for 3. In combination in apparatus for supplying coal to a locomotive fire-box, a tender provided with a gravity discharge passage having a transverse portion, a piston working 1n the transverse portion, a chute in position to receive the discharge from the passage and extending forwardly to the 10- comotive, a receiving-chamber m position to receive the discharge from the chute, a piston therein for forcing the coal into the fire-box, a piston in the rear portion of the chute for giving the fuel its preliminary forward movement, and reciprocatory means in the chute for forwarding the coal therethrough.

at. In combination in apparatus for supplying coal to a stoker, an underfeed trough, a main feed piston atthe rear of the trough, an auxiliary feed piston in the trough, a rocker arm, means for, oscillating it, and a connecting rod mounted intermediate its ends on the rocker arm and connected at one end to the main piston, and a link having pivotal connection to the other. end of the said connecting rod and to the auxiliary piston.

5. In combination in apparatus for supplyin coal to a stoker, a pair of underfeed termediate their ends and having theirrear ends secured to the said bar and having their front ends turned laterally, and pivotal link connection between such front ends and the auxiliary pistons.

In testimony whereof I have hereunto signed my name in the presence of the two subscribing witnesses.

CHARLES D. YOUNG.

Witnesses:

v E. -B. WELSH,

E. A. Smmen'r. 

